MALICIOUS
194
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1059.001 PowerShell
The PDF contains a high number of embedded links, many of which point to external PDF files hosted on various domains, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector infrastructure at https://ttraff.ru/pify. The document body, though heavily obfuscated, contains the same URL and references to 'addition and subtraction of unlike fractions worksheets pdf', likely a lure to disguise the malicious intent. No scripts were extracted, but the primary attack pattern involves redirecting the user to malicious infrastructure.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINKPDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
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Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARMSmall PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINKPDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ttraff.ru/pify?keyword=addition+and+subtraction+of+unlike+fractions+worksheets+pdf In PDF document text
- http://files.killjoy.info/uploads/1/3/2/8/132816158/444fa6d86d0810f.pdfIn PDF document text
- http://files.braddocksbattlefield.com/uploads/1/3/2/7/132712115/jamijovugivepi.pdfIn PDF document text
- http://files.aaavc.net/uploads/1/3/0/8/130874567/sujudifitesiduvome.pdfIn PDF document text
- http://files.greenvalleygrowers.com/uploads/1/3/0/8/130813769/1671cea871b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/0086/3643/files/african_charter_on_human_and_peoples_rights_1981.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0432/7899/1520/files/91169072627.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/2192/4514/files/10405763155.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0440/2987/0230/files/63914519805.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0428/7810/7811/files/almost_is_never_enough_piano_sheet_music.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/6859/6123/files/74424078099.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0435/2350/6336/files/luxulowoxesujokotom.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/8819/1396/files/68416465538.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0437/9515/3058/files/14471004130.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0417/4246/files/tikeratonokovexer.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0438/6842/2309/files/ftce_math_5-_9_practice_test.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0431/0679/5686/files/zitidedomogo.pdfIn PDF document text
- https://cdn.shopify.com/s/files/1/0427/7056/3239/files/definition_of_play_in_early_childhood_education.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00006cd1.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6CD1 | 5528 bytes |
SHA-256: 98ecedbe4b0479f1be00eced976c846926594628192b974152716f6b625c0883 |
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font_01_sfnt_off00007fab.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x7FAB | 9896 bytes |
SHA-256: 689b72df81fee092f9f9fda1906f6130336d5cd871f1a84cb06da095a30545e8 |
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